swift闭包排序算法

let names = ["Chirs", "Alex", "Ewa", "中国", "美国", "啊", "把", "Barry", "Daniella"]
        
        func backwards(s1: String, s2: String) ->Bool {
            
            return s1 > s2
        }
        
        let reversed = names.sorted(by: backwards)
        
        print(reversed)